US2654642A - Bearing - Google Patents

Description

. Oct. 6, 1953 M. MORGAN ETAL 21.654,642

BEARING Filed Nov. 22, 1949 5 Sheets-Sheet 2 JNVENTORS MYLEs MORGAN JOSEPH M. OMALLEY 'ATTORNEY OCf- 6, 1953 M. MORGAN ETAL BEARING i Filed Nov 22, 1949 3 Sheets-Sheet 5 JNVENToRs I MYLgs MORGAN ATTORNEY Patented Oct. 6, 1953 236545.642@ BEARING.

Myles` Morgan and ter... Mass.

Joseph M. OMalley, WorcesftSSignors to Morgan Construction Company.. Worcestar, Mass, a annotation, o f

Massachusetts Application November 22, 194% Seriamq. 128,734

(ci. suse-,599;

4., Claims .This invention relates: toF bearings, and more Particularly to bearings for supporting the. necks. ofthe upper roll in a horizontal rolling mill; as. employed in the rolling ofmetal.

It has. been proposed heretofore to. construct such a bearing with a segmental liner of phenolic resin or similar non-metallic material which engages the upper surface of the roll neckand thusv receives; theupward radial load due to the rolle ing operation. It has` also been proposed to. provide a shoe lined With phenolic resin and ged upwardly against the4 lower surface. of the roll. neck by means of springs. to support the weighty ofI the roll when no. stock isl travelingl through the mill. The prior bearings of' thisA nature have been complicated and expensive to` manuiacture, and they have. required frequent adnstment because oi wear of the phenolic resin liners.

lit is accordingly one object ot the invention to provide an improved roll neck bearingtor upper rolls, which will be simpler and. less eX- pensive to manufacture than prior bearings.

It is a further object of the invention toprovide a roll neck bearing for upper rollswhich will require no adjustment because of wear of the liners.

With these and other objects in. View., as. will be apparent to. those skilled in the art, the invention resides in the combination of parts set forth in the specification and: covered by the.

claims appended hereto.

Referring to the drawings illustrating one embodiment of the invention and: in which like reterence numerals indicate like parts,

Eig. l is a transverse section through an upper roll neck bearing and an associated roll, the section being taken on the line I'-I. of` Fig. 6

Fig. 2 is a detail view of a rod forming a part of the bearing;

Fig. 3 is a further Fig. 2;

Fig. e is an end elevation of the bearing and roll;-

Fig. 5 is an end elevation of the upperA portion of a rolling mill, with a bearing andl roll place therein;I

Fig'. 6 is a section taken` substantially on the line GPS of Fig. 4; and

Fig. 7- is a perspective view of a keyforming a partof the bearing. l

The4 embodiment illustrated comprises a rol-ling mill roll It having a cylindrical roll neck II. The particular roll shown is the upper roll of a .Z-hish` horizontal mill. roll neck View of the rod shown in I I extends through a bore I2: in a bearing chock or casing I 4. which is adapted to be. mounted in the windowv I5. (Fig..5) of a roll housing. I6.; Within the. upper portion ofy the bore. I2 there mounted. an arcuate liner It?I of phenolic resin 0r other suitable non-metallic material which engages. the top of the roll. neck I.IV to. receive the heavy upwardly directed radial load: resulting from the rolling operation. As shown in Fig. l, this liner t3; is heldin place by meansv of two metal bars t9 engaging its opposite edgesv and suitably secured to the chock.

Referring now to Fig. 6, it will be. seen that the roll neck II` is formed with a portion 2l which is reduced slightly in diameter toy provide. a shoulder 2.2. A metal ring 23. suitably keyed to the. portion 2|. and held rml-y against the shoulderl 22 by means of a nut 25 which surrounds. a threaded ring 26 mounted. in a groove 27: inthe roll neckY and keyed thereto. For assembly purposes this. threaded ring. is divided along an axial plane into: two pieces which. are retained in the groove 211 by means of a garter spring 291. In order to prevent the. nut 25v from loosening in service it is secured to the rol-l neck by a keyv 39 which is held: in place by a Wire snap ring 32| This key is arranged to engage any one. of a series of notches 33 formed in the nut 25. The metal ring 23 is provided on its opposite sides with plane surfaces forming shoulders for sliding engagement with an inner thrust ring 35- and an outer thrust ring 35 suitably mounted within the chock I 4. rIhese thrust rings are formedl of phenolic resin or other suitable nonmetallic material. The outerthrust ring 36y is held in place by an adjusting ring 31y having externall screw threads for engagement with in ternal screwthreads in the chock. For a further description of this construction and ofthe means for keying the thrust rings. against rotation, reference may be had to the prior patent to Rich et al'. No. 2,367,613 granted January 16, 1945. In order to exclude scale and other foreign matter from the bearing, a ring 39 of phenolic resin or the like is mounted on ther inner end of the chock I4 and urged against the acljacent end of the roll II by springs titl. An annular splash guard 4I is mounted on the outer end of the chock and surrounds the outer pore tion of the nut 25.

Means is provided to hold the roll neck I I Lipwardly against the concaveV surface ofthe linker I8 and to support the weight ofthe roll Il lf as, well as that of the chock I, so that there will be no jumping of the roll as lthe stock entersv or leaves the roll pass. For this purpose a transverse recess 43 is provided in the lower portion of the chock I5, this recess intersecting the lower part of the bore I2. Within the recess 43 there Y is mounted a horizontal metal plate 44 which carries on its upper surface an arcuate liner 45 of phenolic resin or the like in contact with the lower surface of the roll neck II. The liner 45 is secured to the metal plate 4d by a centrally located vertical phenolic resin dowel pin 45 and by metal clips 48 engaging the ends of the liner 45 and fastened to the plate lill by screws 49 (Fig. l) Vertical holes 5I are formed in the two end portions of the plate 44.

The upper corners of the chock I4, on opposite sides of the bore I2, are cut away to provide notches 53, and from each of these notches a substantially vertical opening 56 extends downwardly through the chock and into the recess d3. These openings 55 are preferably circular in cross-section, and they are aligned with the respective holes 5l in the plate 44. The upper end ofeach opening 55 is enlarged and communicates with a groove or recess 55 which extends to the top of the chock and opens outwardly into the adjacent notch 53. A small notch 56 is provided at the top of the inner wall of each recess 55. The recesses 55 are offset from the openings 54 inwardly, i. e. toward the vertical axial plane of the bearing, and as shown in Fig. 6 the width of the recesses somewhat exceeds the diameter of the openings 54.

An upright rod 58 is mounted in each opening 55 and extends downwardly through the hole 5I therebeneath. An opening 59 of rectangular cross-section extends horizontally through the lower portion of each rod, and a rectangular key 5i) with a shallow notch 5I in its lower surface is mounted in each opening 59. The plate M rests on the keys 5G. The upper portion 53 of each rod 58 is somewhat flattened and offset inwardly from the lower portion so that it lies within the adjacent recess 55. On the upper end of each portion 63 there is formed an outwardly projecting lug Ell. A small horizontal bar 65 is welded or otherwise secured to the inner surface of each portion 63, near the top thereof, to provide an inwardly extending protuberance which lies within the adjacent notch 55 in the chock to prevent appreciable downward movement of the rod.

Referring now to Fig. 5, it will be seen that when the chock I5 is in place in the housing window I5, the lugs 5t will rest on a pair of horizontal rails Si of well-known construction which extend through the notches 53. These rails are supported by levers 68 each of which is mounted on a fulcrum pin 55 carried by the housing I6. The outer ends of the leversV are urged downwardly by coiled compression springs 1I. Upward movement of the chock i4 is resisted by the usual screw-down l2. Stop screws 'I3 are provided to limit movement of the levers BS'under the iniluence of the springs 'Il when the roll and its bearings are removed from the housing.

It will now be apparent that in the operation or" the invention the rails 51 will be urged upwardly by the springs 'H and the levers 68, and the rails will pull the rods 58 upwardly by engaging the lugs 54 thereon. The rods will raise the plate 5M and the liner 35, thus holding the roll neck Il upwardly against the liner I8, and raising the chock Ill as far as the screw-down i2 will permit. Thus the entire weight of the upper roll Ill and its bearings will be carried by the rails 61 through the medium of the rods 58, and the roll will be held upwardly in the proper position at all times whether or not a bar is passing through the mill. Furthermore, any wear on the liners IB or 45 will be taken up automatically as fast as it occurs. It will be understood that suitable means will be provided to supply water to the bearings for lu- -brication and cooling thereof in known manner.

When the roll and bearings are removed from the roll housing, the bearings will remain properly assembled. Until the keys B are removed from the rods 58, it will not be possible to withdraw the rods from the openings 55 in the chock. The bearings are relatively simple, compact, and inexpensive to manufacture.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent is:

1. A bearing for a roll neck of a rolling mill comprising a chock having a horizontal bore to receive the roll neck and a transverse recess intersecting the lower portion of the bore, a liner mounted in the upper portion of the bore providing a concave lower surface for contact with the upper surface of the roll neck and adapted to receive the rolling pressure, the chock having two substantially vertical openings extending therethrough at opposite sides of the bore and communicating at their lower ends 'with the recess, a plate located in the recess and having end portions which extend beneath the openings in the chock, a liner mounted on the plate providing a concave upper surface for Contact with the lower surface of the roll neck, a tension rod extending through each of the said verticalopenings in the chock, means fastening the lower end portions of the rods to the adjacent end portions of the plate, the rods having portions extending upwardly beyond the upper ends of the said vertical openings and offset from said openings in directions inwardly toward the vertical axial plane of the bearing, and outwardly extending lugs on the oiset portions of the rods adapted to engage supporting means independent of the bearing so that the rods may support the plate, the roll, and the chock.

2. A bearing as claimed in claim l, in which the upper corners of the chock, on opposite sides of the bore, are cut away to provide notches from which the vertical openings extend downwardly and the upper end of each vertical opening communicates with a groove which extends to the top of the chock and opens outwardly into the adjacent notch, the offset upper portions of the rods being located within the grooves.

3. A bearing as claimed in claim 2, in which a small notch is provided at the top of the inner wall of each groove, and in which the upper portion of each rod'is provided with an inwardly extending protuberance which lies within the adjacent small notch and limits downward movement of the rod.

4. An upper roll neck bearing for use in rolling mill having a window for receiving the bearing and having bearing supporting members extending inwardly of the window from the upper side portions thereof, said bearing comprising: a chock tting said window for vertical sliding movement therein, the said chock having notches extending inwardly of the upper side portions'thereof into which the supporting members normally extend, a bore in thechock in which the roll neck normally resides, a liner fixed to the upper surface of the bore, a horizontal recess extending through the chock transfrom the notches of the chock into the horizontal 5 recess, grooves in the chock intersecting the vertical passages and opening into the said notches, a rod residing in each vertical passage and connected at its lower end to an extremity of the plate, the upper end of the rod residing in one 10 of said grooves and having a laterally-extending lug for engagement by one of said supporting members.

MYLES MORGAN. JOSEPH M. OMALLEY.

References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 1,956,933 Smitmans May 1, 1934 1,986,027 Talbot Jan. 1, 1935 2,367,613 Rich Jan. 16, 1945 FOREIGN PATENTS Number Country Date 560,273 Great Britain Mar. 28, 1944

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